Maternal smoking can damage the unborn child.

母亲吸烟会对胎儿造成不良影响。

辞典例句

Smoking exacerbates asthma, and maternal smoking during pregnancy increases the risk for the child.

吸尘会加剧哮喘, 怀孕期母亲吸尘会增加孩子患病的风险.

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